/*
 * FCKeditor - The text editor for Internet - http://www.fckeditor.net
 * Copyright (C) 2003-2009 Frederico Caldeira Knabben
 *
 * == BEGIN LICENSE ==
 *
 * Licensed under the terms of any of the following licenses at your
 * choice:
 *
 *  - GNU General Public License Version 2 or later (the "GPL")
 *    http://www.gnu.org/licenses/gpl.html
 *
 *  - GNU Lesser General Public License Version 2.1 or later (the "LGPL")
 *    http://www.gnu.org/licenses/lgpl.html
 *
 *  - Mozilla Public License Version 1.1 or later (the "MPL")
 *    http://www.mozilla.org/MPL/MPL-1.1.html
 *
 * == END LICENSE ==
 *
 * Create the FCKeditorAPI object that is available as a global object in
 * the page where the editor is placed in.
 */

var FCKeditorAPI ;

function InitializeAPI()
{
    var oParentWindow = window.parent ;

    if ( !( FCKeditorAPI = oParentWindow.FCKeditorAPI ) )
    {
        // Make the FCKeditorAPI object available in the parent window. Use
        // eval so this core runs in the parent's scope and so it will still be
        // available if the editor instance is removed ("Can't execute code
        // from a freed script" error).

        // Note: we check the existence of oEditor.GetParentForm because some external
        // code (like JSON) can extend the Object prototype and we get then extra oEditor
        // objects that aren't really FCKeditor instances.
        var sScript =
            'window.FCKeditorAPI = {' +
                'Version : "2.6.4",' +
                'VersionBuild : "21629",' +
                'Instances : window.FCKeditorAPI && window.FCKeditorAPI.Instances || {},' +

                'GetInstance : function( name )' +
                '{' +
                    'return this.Instances[ name ];' +
                '},' +

                '_FormSubmit : function()' +
                '{' +
                    'for ( var name in FCKeditorAPI.Instances )' +
                    '{' +
                        'var oEditor = FCKeditorAPI.Instances[ name ] ;' +
                        'if ( oEditor.GetParentForm && oEditor.GetParentForm() == this )' +
                            'oEditor.UpdateLinkedField() ;' +
                    '}' +
                    'this._FCKOriginalSubmit() ;' +
                '},' +

                '_FunctionQueue    : window.FCKeditorAPI && window.FCKeditorAPI._FunctionQueue || {' +
                    'Functions : new Array(),' +
                    'IsRunning : false,' +

                    'Add : function( f )' +
                    '{' +
                        'this.Functions.push( f );' +
                        'if ( !this.IsRunning )' +
                            'this.StartNext();' +
                    '},' +

                    'StartNext : function()' +
                    '{' +
                        'var aQueue = this.Functions ;' +
                        'if ( aQueue.length > 0 )' +
                        '{' +
                            'this.IsRunning = true;' +
                            'aQueue[0].call();' +
                        '}' +
                        'else ' +
                            'this.IsRunning = false;' +
                    '},' +

                    'Remove : function( f )' +
                    '{' +
                        'var aQueue = this.Functions;' +
                        'var i = 0, fFunc;' +
                        'while( (fFunc = aQueue[ i ]) )' +
                        '{' +
                            'if ( fFunc == f )' +
                                'aQueue.splice( i,1 );' +
                            'i++ ;' +
                        '}' +
                        'this.StartNext();' +
                    '}' +
                '}' +
            '}' ;

        // In IE, the "eval" function is not always available (it works with
        // the JavaScript samples, but not with the ASP ones, for example).
        // So, let's use the execScript instead.
        if ( oParentWindow.execScript )
            oParentWindow.execScript( sScript, 'JavaScript' ) ;
        else
        {
            if ( FCKBrowserInfo.IsGecko10 )
            {
                // FF 1.0.4 gives an error with the request bellow. The
                // following seams to work well.
                eval.call( oParentWindow, sScript ) ;
            }
            else if( FCKBrowserInfo.IsAIR )
            {
                FCKAdobeAIR.FCKeditorAPI_Evaluate( oParentWindow, sScript ) ;
            }
            else if ( FCKBrowserInfo.IsSafari )
            {
                // oParentWindow.eval in Safari executes in the calling window
                // environment, instead of the parent one. The following should
                // make it work.
                var oParentDocument = oParentWindow.document ;
                var eScript = oParentDocument.createElement('script') ;
                eScript.appendChild( oParentDocument.createTextNode( sScript ) ) ;
                oParentDocument.documentElement.appendChild( eScript ) ;
            }
            else
                oParentWindow.eval( sScript ) ;
        }

        FCKeditorAPI = oParentWindow.FCKeditorAPI ;

        // The __Instances properly has been changed to the public Instances,
        // but we should still have the "deprecated" version of it.
        FCKeditorAPI.__Instances = FCKeditorAPI.Instances ;
    }

    // Add the current instance to the FCKeditorAPI's instances collection.
    FCKeditorAPI.Instances[ FCK.Name ] = FCK ;
}

// Attach to the form onsubmit event and to the form.submit().
function _AttachFormSubmitToAPI()
{
    // Get the linked field form.
    var oForm = FCK.GetParentForm() ;

    if ( oForm )
    {
        // Attach to the onsubmit event.
        FCKTools.AddEventListener( oForm, 'submit', FCK.UpdateLinkedField ) ;

        // IE sees oForm.submit function as an 'object'.
        if ( !oForm._FCKOriginalSubmit && ( typeof( oForm.submit ) == 'function' || ( !oForm.submit.tagName && !oForm.submit.length ) ) )
        {
            // Save the original submit.
            oForm._FCKOriginalSubmit = oForm.submit ;

            // Create our replacement for the submit.
            oForm.submit = FCKeditorAPI._FormSubmit ;
        }
    }
}

function FCKeditorAPI_Cleanup()
{
    if ( window.FCKConfig && FCKConfig.MsWebBrowserControlCompat
            && !window.FCKUnloadFlag )
        return ;
    delete FCKeditorAPI.Instances[ FCK.Name ] ;
}
function FCKeditorAPI_ConfirmCleanup()
{
    if ( window.FCKConfig && FCKConfig.MsWebBrowserControlCompat )
        window.FCKUnloadFlag = true ;
}
FCKTools.AddEventListener( window, 'unload', FCKeditorAPI_Cleanup ) ;
FCKTools.AddEventListener( window, 'beforeunload', FCKeditorAPI_ConfirmCleanup) ;
